List of top Chemistry Questions asked in KEAM

\( \text{CO}_2 \) is taken in a closed container initially at a pressure of 0.6 atm at 1500 K. After the addition of solid C, some of \( \text{CO}_2 \) is converted to CO. The equilibrium pressure is then 0.9 atm. Calculate the value of \( K_p \) at 1500 K.
Which metal added in fuel cell to make it more efficient?
Find the order of magnitude of electrode potential ($E^\circ_{\text{M}^{2+}/\text{M}}$) of
Cr, V, Mn, Fe, Co
product of aldol condensation is 1,3-diphenyl pro-3-ene-1-one, then its reactants are
Velocity of \( \text{I}^{\text{st}} \) orbit of hydrogen according to Bohr theory is \( v \), then what is the velocity of \( 3^{\text{rd}} \) orbit of hydrogen?
An organic compound (X) on reductive ozonolysis gave 1 mole of propanal-pent-3-one. Name the organic compound X.
What are possible structural isomers of \( \text{C}_3\text{H}_6\text{Cl}_2 \)?
IUPAC name \( [\text{CoCl}_2(\text{en})_2]\text{Cl} \)
Find the mass of an organic compound of molar mass 84, required to prepare 250 ml solution of molarity 0.4
Find the order of metallic radius of
Mg, Li, Be, B, Al
Which among the following has least \( \text{p}K_b \) value?
Find difference in work function of two different metal if their stopping potential are 0.4V and 1.6V respectively.(metals are illuminated with photons of same energy)
What is the ration of Debroglie wavemength of proton and neutron if kinetic energy is same for both
A 250W bulb emit light of wavelength 19.6nm. Find the no of electron emitted per second
The correct increasing order of the acid strength of benzoic acid (I), 4-nitrobenzoic acid (II), 3,4-dinitrobenzoic acid (III) and 4-methoxybenzoic acid (IV) is
X and Y in the below reaction are ______ and ______ respectively

C\(_6\)H\(_5\)–CO\(_2\)H + X \(\xrightarrow{\text{Heat}}\) C\(_6\)H\(_5\)–COCl \(\xrightarrow{\text{H}_2/\text{Pd/BaSO}_4\text{, Quinoline}}\) Y
Reaction of butanone with methylmagnesium bromide followed by hydrolysis gives:
The reagent ‘R’ in the given sequence of chemical reaction is:
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Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of:
The de Broglie wavelength associated with an electron accelerated by a potential of 64 V is ____.
Arrange the following amines in the decreasing order of their basic strength : Aniline (I), Benzylamine (II), p-toluidine (III)
Correct order of acidic strength:
One mole of an alkene on ozonolysis gives a mixture of one mole pentan-3-one and one mole methanal. The alkene is (2024)
CH₃CH₂Br → (aq. KOH) → A → (PCl₅) → B
Final product B:
The correct sequence of bond enthalpy of ‘C–X’ bond is: